Swimming pool



` v'1,571,512 yv. s. PoLLARp SWIMMING POOL Filed Jan. 8, 1924 2 Sheetsl-Sheet 1 Feb. 23'; 1926. g

l w. s. POLLARD SWIMMING POOL 2 Sheets-'Sheet 2 Filed Jan. 8, -1924 l l l l I pi |H lil l|I 1 iii INVENTOR M J, /O/pvw.

BY WJ, gi

Patented Feb. 23, 1926.

1,574,512 tries.,

WALTER S. POLLARD, F P-EL'ADELPHA, PENNSYLVANIA.

Application lea Jannary To rfi/Z ywho/m, t 'may concern.'

lie it known that l, lVnnri-ni loiiLAnn, a citizen ofthe United States, and a resident of the city of Philadelphia, county of Philadelphia, State of Pennsylvania, have *inf vented a new and useful Swimming Pool,

of which the followingis a specification. I

My present invention comprehends a novel construction and arrangement of' a swimming pool, whereby the puritication of the water is provided for and whereby the material collecting on the surface of the water is removed.

lt. further vcomprehends a novel construction of a swimn'iingpool 'provided with visiblo and invisible skim outlets which commu-y nicate with a discharge conduit leading to a filtration system and wherein provision is made for returning the filtered water to the pool in such a manner as to aerate it before it enters the pool.

@ther novel features of construction and advantages will 'hereinafter more clearly appear in the detailed description and the appended claii'ns.

F or the purpose of illustrating the invention, I havek shown in the accompanying` drawing a typical embodiment of it, which, in practice, will give reliable and satisfactory results. 1t is however to be understood that this embodiment is typical only an-d that the various instrumentalities of which my invention consists can be variously arranged and organized, and that the invention is not limited to the precise arrangement and organization of these. instrumentalities as herein set forth.

Figure 1 represents a top plan view of a swimming pool.

Figure 2 represents a section taken substantially on line 2 2 of Figure 1.

Sin'iilar numerals of reference indicate corresponding parts.

Referring to the drawings:

1 designates a swinm'iing pool en'ibodying my invention. The swimming pool provided with a surrouiiding wall 2, which in practice is ordinarily constructed of concrete, reinforced if' desired. Contained within the wall is a drain 3 which leads to a desired point of discharge. Beneath the top surface of the wall on one or more sides, I provide a step l from which leads the ports 5 of the visible skim outlets which communicate with the drain 3. These visible skim outlets are formed between the 8, 1925:'. Serial N0. 684,929..

walls `ontw-ends G, which are preferably semi- 'fircular. in outline. One wallrof the swimming pool is provi-ded with invisible skim outlets i' which connnunicate with the drain and the -walls leading to such outlets preferably converge towards the drain, as indicated at 8,. lhe main 3 is provided with a desi ed nun'ibor of'set-tling chambers 9 which are filled with sand as indicated at 10. lllie bottom 11 of the swinnning pool is preferably forn'ied of reinforced concrete and has the elongated ports 12 which communicate with .the bottoni main-s 113, which communicate with the conduit vlet which leads to a filter 15 of any desired or con-venional type. The `filtered water is forced from the filter 1.5 by means of a pump 16 through the conduit 17 to one or more stand pipes 18, which, ifI desired, may extend upwardly through a central support 19 preferably formed of reinforced concrete and provided with the steps 2O which extend above and below the surface of the water in the swimn'iing pool. Each stand pipe 18 discharges at its` upper end into a water container 21 from which leads a slide 22 which curves downwardly and is supported in proximity toits lower end by means of a support 23 of any desired character. The water containers 21'form a tower having a platform 2e, and a ladder 25 is provided to provide access to such platform.

Water aerating pipes 26 lead from the water containers 21, and are provided with apertures 27 through which the water will spray with a fountain effect to effect 'the aeration of the water. The top of the tower is provided with any desired type of railing 28. In the operation of the swimming pool, any matter which collects on the surface of the water will pass through the visible skim outlets 5 and the invisible skim outlets 7 into the drain 3 which in practice will preferably lead to the filter, but which, if desired, may discharge into the sewer.

The water withdrawn from the swimming pool through the filter 15 is filtered, and then forced by means of the pump 16 through the conduit 17 and the stand pipes 18 to maintain a continuous: source: of supply in the water containers 21. This water continuously flows in a thin stream down the bottomof' the slides 22 and discharges into the water in the swimming pool. The water from. the containers 21 also discharge from the container 21 through the aerating pipes 2G. The bottom of these pipes are preferably closed, so that the water issues from the discharge apertures of these pipes in the form of a spray which may fall into the slides, or, if desired, directly into the water in the swimming pool.

The water iiowin down the water slide causes a surface action on the pool towards its sides so that the surface water containing the foreign material passes through the skimming ports into the drain contained within the walls of the pool7 and therefrom to the filters.

The passages leading from the pool to the skimming ports decrease in width towards such ports so that the proper skimming action is obtained to effect the removal of any foreign material fioating on the water or contained in its top layer without any undue waste of water or without materially increasingthe cost of operating the pumping mechanism. The invisible outlets give a better appearance to the pool.

The aerating pipes have their discharge ports arranged in any desired manner, and the discharge through these ports may take place on the slides or directly into the pool, as may be desired. In accordance with my presentinvention, the pool can be maintained in a sanitary condition and the water can be properly purified by aeration. Y

It will now be apparent that I have devised a new and useful swimming pool which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description, and while I have, in the present instance, shown and described a preferred embodiment thereof which will give in practice satisfactory and reliable results, it is to be understood that this embodiment is susceptible of modiication in various particulars without departing from the spirit or scope of the invention or sacrificing any of its advantages.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

l. A swimming pool having a surrounding wall provided with laterally extending visible and invisible skim outlets which decrease in width in the direction of the flow, and a drain communicating with said outlets.

2. A swimming pool having a surrounding wall the top surface of which forms a walk and provided with laterally extending visible and invisible skim outlets disposed beneath said top surfacewhich decrease in width in the direction of their lateral How, and a drain in communication with said outlets.

3. A swimming pool having an offset wall provided with skimming ports, and curved laterally extending passages leading from the pool to said ports.

t. A swimming pool having a wall provided with skimming ports, and with passages extending laterally discharging through said ports, said passages being wider at their inlet portions than at their discharge portions.

WALTER S. POLLARD. 

